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advent of code day 1

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This commit is contained in:
Antoni Piasecki
2025-12-18 14:04:44 +01:00
parent 7855e5b092
commit 9f39f627ad
21 changed files with 114 additions and 19 deletions
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2
src/analyzer.rs
View File

@@ -125,7 +125,7 @@ impl Analyzer {
);
}
} else {
// TODO: cant error here since we dont analyze externs/builtins
// TODO: cant error here since we dont analyze externs/builtins YET
}
for arg in args {

13
src/codegen_x86_64.rs
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@@ -254,11 +254,14 @@ _builtin_environ:
self.compile_stmt(env, *body)?;
// fallback to returning null
emit!(&mut self.output, " mov rax, 0");
emit!(&mut self.output, " mov rsp, rbp");
emit!(&mut self.output, " pop rbp");
emit!(&mut self.output, " ret");
// fallback to null
// very hacky but works
if !self.output.trim_end().ends_with(" ret") {
emit!(&mut self.output, " mov rax, 0");
emit!(&mut self.output, " mov rsp, rbp");
emit!(&mut self.output, " pop rbp");
emit!(&mut self.output, " ret");
}
}
Stmt::Return(expr) => {
self.compile_expr(env, expr)?;

10
src/std.zr
View File

@@ -65,7 +65,7 @@ func io.read_char[] : U8
mem.free(s)
return c
func io.read_stdin[]: String
func io.read_line[]: String
let buffer: String = mem.alloc(1025)
let n: I64 = _builtin_syscall(0, 0, buffer, 1024)
if n < 0
@@ -74,7 +74,7 @@ func io.read_stdin[]: String
return buffer
func io.read_file[path: String]: String
let fd: I64 = _builtin_syscall(2, path, 0, 0) // open
let fd: I64 = _builtin_syscall(257, -100, path, 0, 0) // openat
if fd <= 0
dbg.panic("failed to open file")
@@ -88,7 +88,7 @@ func io.read_file[path: String]: String
return buffer
func io.write_file[path: String, content: String] : Void
let fd: Ptr = _builtin_syscall(2, path, 0x241, 0o644) // open
let fd: Ptr = _builtin_syscall(257, -100, path, 0x241, 0o644) // openat
if fd < 0
dbg.panic("failed to open file")
@@ -415,7 +415,7 @@ func os.exit[code: I64] : Void
func os.urandom[]: I64
let buffer: Ptr = mem.alloc(8)
let fd: I64 = _builtin_syscall(2, "/dev/urandom", 0, 0) // open
let fd: I64 = _builtin_syscall(257, -100, "/dev/urandom", 0, 0) // openat
_builtin_syscall(0, fd, buffer, 8) // read
_builtin_syscall(3, fd) // close
let n: I64 = mem.read64(buffer)
@@ -452,7 +452,7 @@ func os.shell[command: String] : I64
return -(st & 0x7f)
func os.listdir[path: String] : Array
let fd: I64 = _builtin_syscall(2, path, 0, 0) // open
let fd: I64 = _builtin_syscall(257, -100, path, 0, 0) // openat
if fd < 0
return []